#define _CRT_SECURE_NO_WARNINGS 1
#include <iostream>
#include <deque>
#include <list>
using namespace std;

namespace foxny {
	void test_queue2() {
		queue<int, list<int>> q;
		q.push(1);
		q.push(2);
		q.push(3);
		q.push(4);

		while (!q.empty()) {
			cout << q.front() << " ";
			q.pop();
		}
		cout << endl;
	}
}